Pinning of longitudinal phonons in holographic spontaneous helices
TLDR
In this article, the spontaneous breaking of translational symmetry and the associated Goldstone mode were investigated in a holographic model with Bianchi VII helical symmetry, and the authors observed the pinning of this mode after introducing a source for explicit breaking compatible with the helical symmetry of the setup.Abstract:
We consider the spontaneous breaking of translational symmetry and identify the associated Goldstone mode — a longitudinal phonon — in a holographic model with Bianchi VII helical symmetry For the first time in holography, we observe the pinning of this mode after introducing a source for explicit breaking compatible with the helical symmetry of our setup We study the dispersion relation of the resulting pseudo-Goldstone mode, uncovering how its speed and mass gap depend on the amplitude of the source and temperature In addition, we extract the optical conductivity as a function of frequency, which reveals a metal-insulator transition as a consequence of the pinningread more
Citations
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References
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The holographic Weyl anomaly
Måns Henningson,Kostas Skenderis +1 more
TL;DR: In this article, the Weyl anomaly for conformal field theories that can be described via the adS/CFT correspondence was calculated for the case d = 2, 4 and 6.
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Lectures on holographic methods for condensed matter physics
TL;DR: In this article, a discussion of holographic techniques progresses from equilibrium, to transport and to superconductivity, and the discussion of supergravity, Strings and Gauge theories are discussed.
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Holographic reconstruction of spacetime and renormalization in the AdS/CFT correspondence
TL;DR: In this paper, the authors developed a method for renormalizing the AdS/CFT prescription for computing correlation functions, which involves regularizing the bulk on-shell supergravity action in a covariant way, computing all divergences, adding counterterms to cancel them and then removing the regulator.
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Minkowski-space correlators in AdS/CFT correspondence: recipe and applications
TL;DR: In this paper, a prescription for computing Minkowski-space correlators from AdS/CFT correspondence was formulated and shown to give the correct retarded propagators at zero temperature in four dimensions, as well as at finite temperature in two dimensions.
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The dynamics of charge-density waves
TL;DR: In many materials with a highly anisotropic band structure, electron-phonon interactions lead to a novel type of ground state called the charge-density wave as mentioned in this paper, which can, even for small electric fields, carry current in a fashion originally envisioned by Frohlich.
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